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<p>Axial spondyloarthritis (axSpA) is a chronic inflammatory disease characterized by complex pain mechanisms that extend beyond inflammation. Although inflammatory nociceptive pain — primarily mediated by pro-inflammatory cytokines — represents the classic pathway and therapeutic target, many patients continue to experience pain despite suppression of inflammation. This residual pain often reflects non-inflammatory processes, including nociplastic and neuropathic pain. Central sensitization, a key mechanism of nociplastic pain, contributes to pain amplification and poor response to treatment. Fibromyalgia, considered the typical phenotype of nociplastic pain, can co-occur with axSpA and is associated with increased symptom burden and reduced efficacy of anti-inflammatory therapies. Neuropathic pain, albeit less common, can result from structural complications and requires targeted therapeutic approaches. In addition, biological sex differences further influence pain perception and treatment outcomes: female patients report more widespread pain, show higher rates of central sensitization and have a worse response to biologic therapies than male patients. Current treatment paradigms are effective for inflammation-driven symptoms but often fail to address the broader spectrum of pain phenotypes in axSpA. Future work should include the development of biomarkers to differentiate pain mechanisms, the refinement of assessment tools and the evaluation of multimodal therapies that target both inflammation and pain processes. This evolving understanding necessitates a shift from an inflammation-centric to a mechanism-informed approach to pain management in axSpA.</p>

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Inflammation and pain as interconnected targets in axial spondyloarthritis

  • 期刊论文

  • 发表日期：

    2026年1月21日

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  • Xenofon Baraliakos,
  • Victoria Navarro-Compán,
  • Nelly Ziade,
  • Denis Poddubnyy

摘要

Axial spondyloarthritis (axSpA) is a chronic inflammatory disease characterized by complex pain mechanisms that extend beyond inflammation. Although inflammatory nociceptive pain — primarily mediated by pro-inflammatory cytokines — represents the classic pathway and therapeutic target, many patients continue to experience pain despite suppression of inflammation. This residual pain often reflects non-inflammatory processes, including nociplastic and neuropathic pain. Central sensitization, a key mechanism of nociplastic pain, contributes to pain amplification and poor response to treatment. Fibromyalgia, considered the typical phenotype of nociplastic pain, can co-occur with axSpA and is associated with increased symptom burden and reduced efficacy of anti-inflammatory therapies. Neuropathic pain, albeit less common, can result from structural complications and requires targeted therapeutic approaches. In addition, biological sex differences further influence pain perception and treatment outcomes: female patients report more widespread pain, show higher rates of central sensitization and have a worse response to biologic therapies than male patients. Current treatment paradigms are effective for inflammation-driven symptoms but often fail to address the broader spectrum of pain phenotypes in axSpA. Future work should include the development of biomarkers to differentiate pain mechanisms, the refinement of assessment tools and the evaluation of multimodal therapies that target both inflammation and pain processes. This evolving understanding necessitates a shift from an inflammation-centric to a mechanism-informed approach to pain management in axSpA.